2006 freestar 4.2 engine veh starts hard in a.m. idles ok when warm can work accel slowly and runs ok until it gets past 1/2 throttle, then engine...

Hello and welcome to ExpertHelp.com! My name is Ramy De Jesus and I'm going to do everything in my power to answer your question to your full satisfaction!

Before we get started, I want to remind you ExpertHelp.com is an independent professional support company. We are not associated with Fordnor are we paid to provide support on their behalf. However, we have helped hundreds of customers with similar questions and believe we can help you too. OK, let’s get started! :)

I’m available to chat now. Please let me know that you are ready by posting a response. I’ll leave my chat session open for the next 15 minutes or so and wait for your reply. If I don’t catch you this time, please respond with a few times (including your timezone) that work best for you and we can connect then.

Hi Douglas! Thank you for choosing ExpertHelp.com. I just want to know if your battery is still in good condition?

Thank you for your response. Try to remove the negative connector on your battery for five minutes and then put it back again. Make sure it is properly connected when you connect it again. Then start the vehicle and try to ro step on the throttle. Tell me what will be the result. I will be standing by.

Have you tried using a OBD 2 scanner to check for error codes? You mentioned you check all the sensors, how about the TPS or the Throttle Position Sensor? Because if this is failing you will encounter this problem.

I see. Have you tried spraying the throttle body using the carb cleaner sprayer? If no, can you try it now. And after you spray it leave for 2 minutes and try to start it again.

I see. I will ask for a second opinion on this issue. I will opt out and a new expert will take over your issue. You will be notified via email when a new Expert contacts you for continued support for your issue.